9.1.2 Fatal errors during X-ray emission
Possible anomalies during exposure always interrupt the exposure itself.
Whether there is an acoustic signal or not depends on the time the fault
occurred and on the success of the X-ray interruption procedure.
Displayed
message
ANOMALY type Corrective actions
E04
No emission (breakage in
the filament circuit)
Measure the impedance value between "+"
and "-" of Driver board - connector X2
(HEATER); this value must be lower than
20 ohm.
If the value is greater than 20 ohm, remove
the tubehead plastic covers and measure
the impedance value between J3.IN+ and
J3.IN- of Filament Voltage Regulator board.
If the value is still greater than 20 ohm,
disconnect the cables J3.Fil+ and J3.Fil-
from the Filament terminal strip and
measure the impedance value between
them.
If the measured value is lower than
20 ohm, replace the DP arm, otherwise
replace tubehead and Driver board.
E06
Activation of the back-up
timer
Check integrity of the flat cable connecting
the CPU to the Driver board.
Switch the system off and on again; if the
message is repeated after an exposure,
replace the Driver board and the tubehead.
E07
Protection intervention Switch the system off.
Check the integrity of power cables
between tubehead and timer and
insulation between them and GND (no
short circuit present).
If cables are ok, switch the unit on; if the
message is still present, replace the Driver
board and the tubehead.
WARNING:
When an error signal appears and the buzzer sounds, always switch
the system off. In any case when the back-up timer is triggered it
always interrupts X-ray emission.
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